Pipe-coupling



W. A. McCULLAR AND 1.1. AYRAUD.

PIPE COUPLING.

APPLICATION FILED AuG.26.1919.

PatentedAug. 17, 1920.

rllkll FIG. 3

UNITED STATES PATENT OFFICE.l

WILLIE A. MCCULLAR AND JULES J'. AYRAUD, 0F BEAUMONT, TEXAS.

rIPn-coUPrING.

Application med August 26, 1919.

T0 all whom t may concern:

Be it known that we, IVILLIE A.. MCGUL- LAI: and JULns J. AYRAUD, citizens of the United States of America, and residents of Beaumont, in the county of Jefferson and State of Texas, have invented certain new and useful Improvements in Pipe-Couplings, of' which the following is a specifica tion.

This invention relates to pipe couplings, and has for its object the provision of novel means whereby the joints of pipes may be speedily connected or disconnected, and, while the device is of pri-mary importance in connection with pipes used for well drilling, it is, of course, susceptible to general application, and I do not wish to be limited with respect to the uses.

A further object of this invention is to provide novel means whereby a pipe joint may be produced having means for attaching ends of pipes to them, and the said couplingv having interlocking members which can be readily detached, although provision is made for holding the parts in assembled relation to each other to guard against accidental disengagement.

With the foregoing and other objects in view, the invention consists in the details of construction and in the arrangement and combination of parts to be hereinafter more fully set forth and claimed.

In describing the invention in detail, reference will be had to the accompanying drawings forming part of this specification wherein like characters denote corresponding parts in the several viewsl and in which- Figure l illustrates a plan view of an end of one of the couplings embodying the invention;

Fig. 2 illustrates a view in elevation showing fragments of the pipes and the coupling;

Fig. 3 illustrates a sectional view of one member of the coupling and a fragment of the pipe; and

Fig. l illustrates a section on the line A-A of Fig. 1.

In these drawings a and a denote fragments of pipes which are connected to the couplings Z) and b', respectively, in known manner.

rlhe coupling Z) has a tapered extension f terminating in flanges d which are interrupted.

Specification of Letters Patent.

Patented Augl', 1920.

serial No. 319,867. l

rllhe member o has an inwardly tapered aperture c at one end and the tapered wall is cut away as at Z to form clea ances for the flanges d, whereas the uncut portion of the wall forms flanges c which have shoulders g, under which the fianges d, after they have been inserted in the recesses Z, are turned slightly to bring them into operative relation to the flanges c.

The taper of the extension and of the aperture e are approximately the same degree, so that a tight joint is formed between the members of the coupling.

The shoulder g is beveled so that when the flanges l engage the shoulders g in turning, a camming action results which tends to draw the contacting surfaces of the extension and a surface of the aperture c into close engagement, so that a leak-proof joint will result.

Externally the members l) and b have coinciding channels m, and they preferably are tapered to receive the tapered keys z' which are wedged in the channels and serve to prevent rotary motion of one of the coupling members with relation to the other coupling member. Each key has an aperture 7c for receiving a tool for lifting the key from its seat when the parts are to be disconnected.

From an inspection of the drawing and from the foregoing description it will be apparent that when the extension of the member l) is inserted in the aperturevof the member the flanges must aline with the recess Z, and that when they have been iuserted until the flanges passthe shoulders g the members can be turned with relation to each other, and that when they are so turned the flanges CZ will ride over the shoulders 0, causing the coupling members to be drawn tightly together. Of course the rotation must be such as to cause the channels 'm to aline, after which the key can be inserted to hold the 'parts together.

We claim:

In a pipe coupling, a member to which a pipe is connected, an extension of the said member tapered toward its end, the said extension terminating inflanges the ends of which are in separated relation to each other, a coupling member to which the pipe is connected, the end of said member remote from said pipe having an aperture with inwardly tapered walls, the said walls being recessed to form clearances for the Q 1 Y 1,350,078V

anges of the rst mentioned member and withV the enlarged end of the groove of the the under surfaces of the said Well forming' other member and keys in saidl grooves conshoulders to engage 'the anges .of the irst; forming to theeontour of the grooves in the l0 mentioned member, said members having Vtwo members.

coinciding external grooves the groovesbe" V ing tapered from end to end, the reduced WILLIE A. MCCULLAR.V

end of the groove of one member dining JULES J. AYRAUD. 

